Vertex Piston Kit Ø56.00 B 09102558 for KTM SX 144 2007–2008 SX 150 2009–2015

Name: Vertex Piston Kit Ø56.00 B 09102558 for KTM SX 144 2007–2008 SX 150 2009–2015
Brand: VERTEX
SKU: 09102558
Price: 132.95 GBP
Availability: InStock

Fits 2 bikes

RRP £166.19 Save 20%

£132.95

incl. VAT

In stock — delivered in 6–10 working days

Dispatched in 2–3 working days · delivered in 6–10.

Part #: 09102558

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§ 02 / About this part

What it is

Vertex piston kit Ø56.00 B to fit the KTM SX 144, model years 2007–2008, and KTM SX 150, model years 2009–2015.

This B-grade kit is designed for cylinders that have worn slightly and require a larger diameter to maintain the correct clearance. It replaces OEM part 51530007400 and is a core part of your 2-stroke engine. Frequent swaps are necessary on high-revving engines to prevent power loss and skirt cracking. The kit includes the rings, pin, and clips. Confirm your bore size with a dial bore gauge to ensure the B-spec is the right fit. Lubricate the small-end bearing with 2-stroke oil during assembly to ensure immediate protection on start-up.

§ 03 / Specs

The numbers

Brand: VERTEX
Part number: 09102558
Category: Top End
Weight: 0.20 kg
OEM cross-refs: 51530007400
VAT: 20%

// Fitment

Will it fit your bike?

Fits 2 models · 2 year-bands

* Fitment data is provided as a guide. Verify compatibility against the bike's owner's manual or service handbook before ordering. Iron Offroad accepts no liability for incorrect application. Full terms and conditions apply.

§ 05 / About Iron Offroad

Iron Offroad

Iron Offroad is the off-road sibling of Iron City and Iron Stable — a UK shop for motocross, enduro, and trail-bike hard parts. Every fitment lives on the site, listed against KTM, Husqvarna, GasGas, Yamaha, Honda, Kawasaki, Suzuki, and Beta. Pick your bike on the timing-tower. Our USP is the data: fully enriched fitment so you find the right part for your bike quickly and get it fitted accurately. Brands you'd find on a paddock workbench — pads, sprockets, plastics, fork seals, cables, gaskets, bars, the things that actually wear out. Road-bike kit, scooter parts, and quad gear sit elsewhere; dirt and e-moto only. We operate from our storage facility in Leeds. Iron Offroad is a trading name of Iron Stable Ltd, registered in Mildenhall — Company No. 17061294. The business has a rich motorcycle history across multiple moto brands — the photos show where we came from — and recently pivoted into hard parts and online retail.